Cloth-cutting mechanism.



M. SIEGEL.

CLOTH CUTTING MECHANISM.

APPLICATION FILED JUNE 13. I916.

,235,8.47. Patented Aug. 7, 1917.

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MYER SIEGEL, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF 'IO SIGMUND SALOMON,

OF NEW YORK, N. Y.

CLOTH-CUTTING MECHANISM.

Specification of Letters Patent. 7

Patented Aug. '7, 191 '7.

Application filed June 13, 1916. Serial No. 103,510.

To all whom it may concern:

Be it known that I MYER SIEGEL, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented new and useful Improvements in Cloth-Cutting Mechanism, of which the following is a specification.

This invention relates to cloth cutting machines and it consists in the novel features hereinafter described and claimed. I

The subject matter of the present invention is an improvement upon the cloth cut.- ting machine covered in my prior patent issued November 3, 1914, No. 1,116,335.

An object of the present invention is to improve the structure of the cutting machine and at the same time to provide simple and eflicient means which may be used when the machine is not employed for cutting cloth for sharpening the knife blade thereof.

l/Vith these objects in view the machine comprises a motor mounted upon a standard there being a knife blade mounted for reciprocatory movement along the standard. Novel and improved means are provided for reciprocating the knife blade from the shaft of the motor and a sharpening device is connected with the machine and may be used for sharpening the edge of the knife when the machine is not being used for cutting cloth.

In the accompanying drawings Figure 1 is a side elevation of one form of the machine;

Fig. 2 is a detailed sectional view taken on the line 2-2 of Fig. 1;

Fig. 3 is a side elevation of the upper portion of the machine;

Fig. 4 is a plan view of the sharpenmg mechanism with parts in section;

Fig. 5 is a detailed side elevation of the upper rear portion of the machine.

The cloth cutting machine comprises a standard 1 which is mounted upon a base 2, said base in turn being mounted upon rollers 3 in a usual manner. A motor 4 is mounted at the upper end of the standard 1 and any suitable means may be provided for electrically operating the said motor. A handle 5 is attached to the motor.

A shaft 6 is journaled for turning movement at the upper side of the motor 4 and the said shaft is provided at one end with a crank 7. A disk 8 is mounted upon the shaft of the motor 4 and a pitman rod 9 is pivotally connected at one end with the disk 8 at a point beyond the point of connection between the said disk and the shaft of the motor 4 and the other end of the said rod 9 is pivotally connected with the crank 7.

A knife blade 10 is mounted for reciprocatory movement at the upper forward portion of the standard 1 and the upper end of the said blade 10 is connected with a bar 11 which in turn is slidably mounted in a guide 12 provided at the upper portion of the motor 4. A crank 13 is mounted upon the shaft 6 and a link 14 is pivotally connected at one end with the said crank 13 and pivotally connected at its other end with the upper end of the bar 11.

Consequently it will be seen that as the shaft of the motor 4 rotates the disk 8 is rotated and through the rod 9 the shaft 6 is oscillated back and forth. During the turning movement of the said shaft 6 the crank 13 is swung whereby the'link 14 is moved longitudinally and the bar 11 is similarly moved in the guide 12 whereby the knife blade 10 is reciprocated vertically at the upper forward portion of the standard 1. When the knife blade '10 is used for cutting a bolt of cloth the cloth is presented to the standard and the lower and forward edges of the blade 10 cut the cloth.

A bar 15 is supported from the guide 12 and the said bar carries at its lower end a pivoted presser foot 16. During the operation of cutting the cloth the said foot 16 bears against the upper side of the bolt and prevents the cloth from following the knife blade 10 in an upward direction as the said blade ascends. A collar 17 is mounted upon the intermediate portion of the bar 15 and a spring 18 is interposed between the said collar and one of the guides 19 which receive the upper portion of the said bar 15. A spring 18 is under tension with a tendency to hold the collar 17 toward the lowermost guide 19. However the bar 15 and its attachments may move vertically against the tension of the spring 18 when suflicient upward pressure is applied to the lower portion of the bar 15 or when the same is raised as will be explained.

The upper portion of the bar 15 is provided with teeth 20 which are engaged by gear teeth 21 mounted upon a shaft 22 journaled in the uppermost guide 19. A

knurled knob 23 is mounted upon the shaft 22 and may be used for turning the same. It is apparent that when the shaft 22 is turned the teeth 21 which are in engagement with the teeth 20 will raise or lower the bar 15 and its attachments.

A shaft 24 is journaled at the lower portion of the motor 4 and an arm 25 is fixed to one end of the said shaft. The said arm 25 is provided at its free end with a fork 26 which receives a stud 27 mounted at the upper portion of the blade 10 and the lower portion of the bar 11.

A sleeve '28 is pivoted at the lower portion of the motor 4 and carries a rod 29 which in turn carries abrading members 30. Springs 31 are interposed between the sides of the abrading members 30 and fixed points of their supports and serve to hold the said. abrading members toward each other. A gear wheel 32 is mounted upon the shaft 24 and meshes with gear teeth 33 mounted upon the sleeve 28. Consequently it will be seen that when the sharpening device is used the knife blade 10 is reciprocated as hereinbefore described and through the arm 25 the shaft 24 is rocked. During the rocking movement of the shaft 24 the intermeshing gear wheels 32 with the teeth 33 swings the sleeve 28 whereby the rod 29 and the abrading members 30 are moved vertically along the knife blade 10. As the said abrading members receive the edge of the blade 10 between them they abrade and sharpen the said blade.

It is to be understood that when the machine is used for cutting cloth the sharpen ing device is not employed. l/Vhen however, it is desired to sharpen the edge of the cutting knife or blade and at such time as the machine is not employed for cutting cloth the sharpening devices are adjusted and applied arm carried by the shaft, means operatively '2 connecting the arm with the knife, a sleeve pivoted upon the motor, a bar carried by the sleeve, abrading elements carried by the bar and means for operating the sleeve from the shaft.

2. A cloth cutting machine comprising a motor, a knife mounted for reciprocation, means for operating the knife from the shaft of the motor, a shaft journaled upon the motor, an arm carried by the shaft, means operatively connecting the arm with the knife, a sleeve pivoted uponthe motor, intermeshing gear wheels operatively connecting said sleeve with said shaft, a bar carried by the sleeve and, spring pressed abrading elements carried by the bar and adapted to operate against the edge of the kni e.

In testimony whereof I affix my signature.

MYER SIEGEL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

